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Re-Evaluation of Oil Bearing for Wells with Long Production Histories in Low Permeability Reservoirs Using Data-Driven Models

Author

Listed:
  • Yongchao Xue

    (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China)

  • Chong Cao

    (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China)

  • Qingshuang Jin

    (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China)

  • Qianyu Wang

    (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China)

Abstract

The re-evaluation of oil-bearing wells enables finding potential oil-bearing areas and estimating the results of well logging. The re-evaluation of oil bearing is one of the key procedures for guiding the development of lower production wells with long-term production histories. However, there are many limitations to traditional oil-bearing assessment due to low resolution and excessive reliance on geological expert experience, which may lead to inaccurate and uncertain predictions. Based on information gain, three data-driven models were established in this paper to re-evaluate the oil bearing of long-term production wells. The results indicated that the RF model performed best with an accuracy of 95.07%, while the prediction capability of the neural network model was the worst, with only 79.8% accuracy. Moreover, an integrated model was explored to improve model accuracy. Compared with the neural network, support vector machine, and random forest models, the accuracy of the fusion model was improved by 20.9%, 8.5%, and 1.4%, which indicated that the integrated model assisted in enhancing the accuracy of oil-bearing prediction. Combined with the long-term production characteristics of oil wells in the actual oil field, the potential target sweet spot was found, providing theoretical guidance for the effective development of lower production wells in the late period of oilfield development.

Suggested Citation

  • Yongchao Xue & Chong Cao & Qingshuang Jin & Qianyu Wang, 2023. "Re-Evaluation of Oil Bearing for Wells with Long Production Histories in Low Permeability Reservoirs Using Data-Driven Models," Energies, MDPI, vol. 16(2), pages 1-21, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:2:p:677-:d:1027221
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    References listed on IDEAS

    as
    1. Yury V. Ilyushin, 2022. "Development of a Process Control System for the Production of High-Paraffin Oil," Energies, MDPI, vol. 15(17), pages 1-10, September.
    2. Ivan Makhotin & Denis Orlov & Dmitry Koroteev, 2022. "Machine Learning to Rate and Predict the Efficiency of Waterflooding for Oil Production," Energies, MDPI, vol. 15(3), pages 1-18, February.
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